I just bought a 2005 ZX10R brand new (left over from last year) and I want to change the exhaust. My question is I know that the full system is very expensive and I don't have a lot to spend, so is it worth the extra money to wait and save for the full, or will the slip-on get the job done just fine for a lot less ? I'm not a racer, but I do love the power, so this will be primarilly for street riding. This is the first mod i'm looking at doing, is this the best place to start ? How much extra power do you really get by going full/slip-on ?